PortMedia offers free, cross-platform, open-source I/O libraries for digital media including MIDI, video, and audio (see www.portaudio.com). Most work is in C to facilitate interoperabilty with many languages and systems.

WideStudio is an Integrated Development Environment (IDE) for building window applications in C++, Ruby, Python an Perl for Windows, MacOSX, Linux, FreeBSD, SOLARIS and other unix and BTRON and T-Engine. This is open and free (under MIT/X Consortiun Lice

The Installer Application for Mac.
If you have any questions, you can contact us at http://mactelabs.com/ . You can use this open-source project according to the terms of MIT license, full source code and documentation available.
We also can provide custom development services for you.

The Operating System Colour Management System Oyranos is intented to coordinate device informations (ICC colour profiles) and configure their system wide usage. Target is a predictable path for applications and users to match colours across devices.